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Modelling Soil Erosion and Sedimentation in the Oued Haricha Sub-Basin (Tahaddart Watershed, Western Rif, Morocco): Risk Assessment

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Journal of Geoscience and Environment Protection 2016年第1期4卷 107-119页

作者： Mounia Tahiri hassan Tabyaoui Abdelfatah Tahiri hassan el hadi Fatima el Hammichi Mohammed Achab Applied Geology Geomatic & Environment Laboratory Sciences Faculty of Ben Msik Hassan II University of Casablanca Casablanca Morocco Natural Resources and Environment Laboratory Polydisciplinary Faculty of Taza Sidi Mohamed Ben Abdellah University Fez Morocco Geology and Remote Sensing Laboratory URAC46 Mohammed V University of Rabat Scientific Institute Morocco

This study evaluates the annual loss of soil in the sub-basin of Oued Haricha (Tahaddart basin, Western Rif, NW Morocco). The integration of revised (RUSLE) and modified (MUSLE) soil loss empirical equations of Wischmeier and Smith in combination with GIS permits the modelling of soil erosion at the scale of parcels. The characteristics of precipitation and runoff, the soil properties, the culture system and the current working practices of soil in the sub-basin of the Oued Haricha are collected from local data. The digital terrain model is used to generate topographic factors. The combination of different RUSLE factors shows that the annual soil is 62.72 t/ha/year and corresponds to an average level of risk. The total losses calculated by MUSLE method are valued at 221,468 t/year. The rates of loss due to linear erosion are 82,652 t/year. These soil losses represent 20.33% of the total losses, and confirm that the losses on the slopes outweigh the losses due to the river system. Sedimentation module shows that the areas of high erosion (greater than 200 t/ha/year) are concentrated in the reliefs with average and high slope and occupy 38% of the total area. The deposition areas occupy the centre of sub-basin and constitute 9.12% of the total area. These deposits were concentrated on the edges of major rivers and the outlet of the sub-basin and contributed to siltation of the April 9, 1947 dam.

关键词： Soil Erosion Deposition Oued Haricha NW-Rif Morocco

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Phytoremediation Mechanisms of Heavy Metal Contaminated Soils: A Review

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Open Journal of Ecology 2015年第8期5卷 375-388页

作者： Meriem Laghlimi Bouamar Baghdad hassan el hadi Abdelhak Bouabdli Laboratory of Applied Geology Geomatic and Environment Faculty of Sciences Ben M’Sik University Hassan II Casablanca Morocco Department of Natural Resources and Environment Hassan II Agronomy and Veterinary Institute Rabat Morocco Department of Geology Faculty of Science Ibn Tofail University Kenitra Morocco

Phytoremediation is a green emerging technology used to remove pollutants from environment components. Mechanisms used to remediate soils contaminated by heavy metal are: phytoextraction, phytostabilisation, phytovolatilization and rhizofiltration. The two first mechanisms are the most reliable. Many factors influence the choice of the suitable phytoremediation strategy for soil decontamination. It depends on soil properties, heavy metal levels and characteristics, plant species and climatic conditions. The present review discusses factors affecting heavy metals uptake by plant species, the different phytoremediation strategies of heavy metal contaminated soils and the advantages and disadvantages of phytoremediation and each of its mechanisms.

关键词： Heavy Metal Soils Contamination Phytoremediation

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Abandoned Quarries in the Akreuch Area (Western Morocco): Inventory of Flora for a Rehabilitation Strategy

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Open Journal of Ecology 2015年第8期5卷 361-374页

作者： Meryem Taoufik Bouamar Baghdad hassan el hadi Abdelkader Taleb Meriem Laghlimi Laboratory of Geochemistry Geomatic and Environment Hassan II University Faculty of Sciences Ben M’Sik Casablanca Morocco Department of Natural Resources and Environment Agronomic and Veterinary Institute Hassan II Rabat Morocco

Quarrying is an activity contributing to the vitality of the Moroccan economy. However, most of these quarries were abandoned at the end of extraction and became dump and later a place of uncontrolled landfills. The number of restored or rehabilitated quarries is limited and this threatens several aspects of the environment, especially, the quality of surface and ground water, landscape, forests, etc. This also gives rise to increased erosion risk. The study identifies plant species covering 10 abandoned quarries in the region of Rabat, especially the Bouregreg River and its affluent Akreuch in order to define a strategy for their restoration or rehabilitation. Field surveys were led to locate and map 10 abandoned quarries and to sample plant species. Herbaria were established and species were identified and classified. The results of the study distinguished 46 different plant species spread over 45 genera and 27 botanical families. The most dominant family in the quarries visited is Asteraceae. These results will allow us to study the vegetation dynamics in these abandoned lands and serve as a basis, in the selection of appropriate species in eventual restoration or rehabilitation projects.

关键词： Akreuch Bouregreg Flora Quarries Rehabilitation Restoration

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Geodiversity Examples of Morocco: From Inventory to Regional Geotourism Development

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Open Journal of Ecology 2015年第9期5卷 409-419页

作者： hassan el hadi Abdelfatah Tahiri José Brilha Ayoub el Maidani Bouamar Baghdad Abdelkrim Zaidi Laboratory of Applied Geology Geomatic and Environment/Sciences Faculty of Ben M’Sik University Hassan II of Casablanca Casablanca Morocco Geology and Remote Sensing Laboratory URAC46 Scientific Institute University of Rabat Morocco Institute of Earth Sciences Pole of the University of Minho Campus de Gualtar Braga Portugal University hassan II of Casablanca Casablanca Morocco hassan II Agronomy and Veterinary Institute Rabat Morocco Université Ibn Zohr Agadir Morocco

The soil and subsoil of Morocco are rich in geological phenomena that bear the imprint of a history which goes back in time more than 2000 million years. Very many geologically remarkable sites exposed in accessible outcrops, with good quality remained unknown to the general public and therefore deserved to be vulgarized. It is a memory to acquaint the present generations but also to preserve for future generations. In total, a rich geological heritage in many ways: Varied landscapes, international stratotypes, various geological structures, varied rocks, mineral associations, a huge procession offossiles, remnants of oceanic crust (ophiolites) among oldests ones in the world (800 my), etc. For this geological heritage, an approach of an overall inventory is needed, both regionally and nationally, taking into account all the skills of the earth sciences. This will put the item on the natural (geological) potentialities as a lever for sustainable regional development. For this, it is necessary to implement a strategy of “geoconservation” for the preservation and assessment of the geological heritage. A website “lithothèque du Maroc” is under construction.

关键词： Geodiversity Morocco Inventory Regional Development

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The Late Neoproterozoïc Continental Tholeiitic Basalts of the Toubkal Inlier (Western High-Atlas, Morocco): A Post-Pan-African Rifting Witness in the Northern Margin of the West African Craton

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Open Journal of Ecology 2016年第8期6卷 509-516页

作者： Ghalem Zahour hassan el hadi Abdelfatah Tahiri Youssef Zerhouni Saida Alikouss Rachid Zahour Aicha Reddad Laboratory of Paleobelts Geodynamic Sciences Faculty of Ben M’sik Hassan II University of Casablanca Casablanca Morocco Geology and Remote Sensing Laboratory URAC46 Mohammed V University of Rabat Scientific Institute Rabat Morocco Laboratory of Géosciences Science and Techniques Faculty Guéliz Cadi Ayyad University Marrakech Morocco

The late Neoproterozoïc Toubkal inlier (Ancient Massif of the High-Atlas, Morocco) contains two igneous basaltic series (Tircht and Sidi Chamharouch). Investigated rocks display characteristics of within-plate continental tholeiitic and are similar to rocks originated in orogenic contexts. The geochemical results allow the assumption that subduction active processes are indirectly responsible for the genesis of theses rocks. The orogenic signature is linked probably to a Pan-African magmatic source previously metasomatized in the northern margin of the West African Craton.

关键词： Toubkal Inlier Late Neoproterozoïc Continental Tholeiites Rift West African Craton

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Energy Efficient Scheduler of Aperiodic Jobs for Real-time Embedded Systems

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International Journal of Automation and computing 2020年第5期17卷 733-743页

作者： Hussein el Ghor el-hadi MAggoune University Institute of Technology Lebanese UniversityLebanon Sensor Networks and Cellular Systems(SNCS)Research Center UTSaudi Arabia electrical Engineering Department University of Tabuk Sensor Networks and Cellular Systems(SNCS)Research Center 71491 TabukSaudi Arabia

Energy consumption has become a key metric for evaluating how good an embedded system is,alongside more performance metrics like respecting operation deadlines and speed of *** improvement is no longer the only metric by which optimality is *** fact,energy efficiency is becoming a preferred choice with a fundamental objective to optimize the system's *** this work,we propose an optimal energy efficient scheduling algorithm for aperiodic real-time jobs to reduce CPU energy ***,we apply the concept of real-time process scheduling to a dynamic voltage and frequency scaling(DVFS)*** address a variant of earliest deadline first(EDF)scheduling algorithm called energy saving-dynamic voltage and frequency scaling(ES-DVFS)algorithm that is suited to unpredictable future energy production and irregular job *** prove that ES-DVFS cannot attain a total value greater than C/ˆSα,whereˆS is the minimum speed of any job and C is the available energy *** also investigate the implications of having in advance,information about the largest job size and the minimum speed used for the competitive factor of *** show that such advance knowledge makes possible the design of semi-on-line algorithm,ES-DVFS∗∗,that achieved a constant competitive factor of 0.5 which is proved as an optimal competitive *** experimental study demonstrates that substantial energy savings and highest percentage of feasible job sets can be obtained through our solution that combines EDF and DVFS optimally under the given aperiodic jobs and energy models.

关键词： Real-time systems energy efficiency aperiodic jobs scheduling dynamic voltage scaling low-power systems embedded systems

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Influence of Silica Fume on Corrosion Behaviour of Reinforced Steel in Different Media

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Journal of Materials Science & Technology 2002年第1期18卷 83-88页

作者： Z.A.el-hadi I.Z.Selim 等 DepartmentofChemistry UniversityCollegeforGirlsAinShamsUniversityEgypt PhysicalChemistryDepartment NationalResearchCenterCairoEgypt

electrochemical and corrosion behaviour of reinforced steel embedded in cement pastes incorporating different amounts of silica fume as a partial replacement of cement has been studied in chloride and sulphate solutions by using different electrochemical techniques. The results indicate that, while steel passivity degree is low in the control samples' upon soaking in the corrosive media, it has been high in samples incorporating silica fume and increased with increasing silica fume content. The improvement effect of silica fume may be attributed to the pore solution structure of the cement paste, which limits the mobility of aggressive ions near the surface of the steel. The mechanism of steel corrosion due to chloride and sulphate attack and passivation effect of silica fume are discussed.

关键词： Corrosion Reinforced steel Cement pastes Silica fume Aggressive ions

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Effect of Pb Ions on the Ionic Conductivity of Some Silicate Glass Systems

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Journal of Materials Science & Technology 2002年第5期18卷 391-394页

作者： A.G.Mostafa Z.A.el-hadi 等 PhysicsDepartment FacultyofScienceAl-AzharUniversityNasrCityCairoEgypt ChemistryDepartment UniversityCollegeforGirlsAinShamsUniversityCairoEgypt

Conductivity of glasses in the systems ***, (where R=Ca, Sr or Ba) was investigated between room temperature and 530 K. The dependence of log resistivity as well as the activation energy on the PbO content has been studied. Based on the present experimental results, the possible different conduction mechanisms in such glasses are discussed. It was postulated that Pb2+ ions may represent the major charge carrying species in these glasses. This assumption was confirmed by the calculations of the mean distance between the interstitial Pb2+ ions and the effective center of the O2- ions in the glass networks. The variation in the values of the density and the molar volume with PbO content is also discussed in view of the obtained activation energies for the studied glass-systems.

关键词： Ionic conductivity Pb ion Silicate glass systems

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Sedimentologic Study of Miocene Outcrops-Ouenza in Algero-Tunisian Frontiers

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地学前缘 2009年第S1期16卷 201-202页

作者： Mazouz el hadi Hamimed Messaoud University of Tebessa ALGERIA

The results of the granulometrical and sequential analysis supported by micropaleontological dating using the foraminifera as well as chemico-ponderous and X-ray diffraction analysis,confirmed the contemporaneity of the Burdigalian outcrops of the two studied zones(Ain Sidi Salah zone in the northeast and Fedj el Behim zone in the southwest), both located at the north of the city of Ouenza in

关键词： sedimentology sequence analysis foraminifera Burdigalian Ouenza

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Dielectric Properties of Some Borate Glasses

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Journal of Materials Science & Technology 2001年第2期17卷 278-282页

作者： Z.A.el-hadi Chemistry Department, College For Girls, Ain-Shams University, Heliopolis, Cairo, Egypt Dept. of Chem. Coll. for Girls Ainshams Univ. Cairo Egypt

The dielectric constant, e', and the dielectric loss. e', for some selected lead borate glasses within the frequency band 105 to 107 Hz and the temperature range (20-50)'C were measured. The dielectric dispersion and the dielectric loss absorption bands were observed. the relaxation time, the activation enthalpy and entropy change of the dielectric relaxation were calculated. The results obtained were discussed and correlated to the internal network structure of the glasses studied.

关键词： rate Dielectric Properties of Some Borate Glasses

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